Idaho Running Day Marathon, Half Marathon, 10k, & 5k

September 2024 • Boise, ID • Course Map

Join the celebration of Idaho Running Day on September 16, 2023—an event uniting the running community's thrill and passion.

Embark on a celebration of the pure joy of running at Idaho Running Day. This event is designed to rekindle the thrill of racing for participants of all levels, offering an array of distances from a spirited 5K to a challenging marathon.

Set against the stunning backdrop of Lucky Peak State Park in Boise, the event unfolds at Sandy Point, creating an idyllic venue for an unforgettable day of running. All four distances, including the 5K, 10K, Half Marathon, and Marathon, follow scenic out-and-back routes, ensuring you experience the beauty of the surroundings.

As you traverse the course, expect ample support with manned aid stations strategically placed along the way. The event kicks off at 74 Arrowrock Road, Boise, Idaho, serving as the starting point for your chosen distance.

Idaho Running Day is not just a race; it’s a celebration of the running community coming together to rediscover the thrill, camaraderie, and shared passion for the sport.

Race Weather & Climate

In Boise, around September you can expect an average high temperature of around 77°F and a low of approximately 50°F. This period marks the transition from summer to fall, providing warm and pleasant days with cooler nights. The atmosphere is characterized by the changing colors of early fall foliage, and September typically sees an average rainfall of about 0.5 inches in Boise.

Idaho Running Day Past Results

Idaho Running Day Course Map

See the race route map for the race distances here.

Starting Time

  • 8:00 AM – Marathon
  • 8:30 AM – Half Marathon
  • 8:45 AM – 10k Marathon
  • 9:00 AM – 5k Marathon

Course Limit

  • 6.5 hours for the Marathon
  • 6 hours for the Half Marathon

Idaho Running Day Fees

  • $50 for the Half Marathon
  • $40 for the 10k Marathon
  • $30 for the 5k Marathon

Idaho Running Day Registration

You can find the registration at boisehalf.org.

Official Race Website

Additional race information can be found at boisehalf.org.

See more races in: September, Idaho

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